Pset_SoundAttenuation

6.2.4.22 Pset_SoundAttenuation

PSET_TYPEDRIVENOVERRIDE / IfcAnnotation / SOUND

Sound Attenuation: Common definition to capture sound pressure at a point on behalf of a device typically used within the context of building services and flow distribution systems. To indicate sound values from an instance of IfcDistributionFlowElement at a particular location, IfcAnnotation instance(s) should be assigned to the IfcDistributionFlowElement through the IfcRelAssignsToProduct relationship. The IfcAnnotation should specify ObjectType of 'Sound' and geometric representation of 'Annotation Point' consisting of a single IfcPoint subtype as described at IfcAnnotation. This property set is instantiated multiple times on an object for each frequency band. HISTORY: New property set in IFC Release 2x4.

: 建物管理・空気の搬送システムに関連する設備の音圧の性能指標。特定位置からあるIfcDistributionFlowElement設備の音性能値を表すために、IfcRelAssignsToProduct を通してIfcDistributionFlowElementに IfcAnnotation注釈属性値を付ける。 IfcAnnotation属性値は音の種別（ObjectType）と幾何的な代表位置注釈ポイントで構成され、注釈ポイントは IfcAnnotation注釈を入れたIfcPoint一点とする。このPsetは周波数バンド（帯域幅）１HZにおけるある音の強さの倍数で表示する。履歴：IFC２ｘ４に新たに定義された。

Link to IFD buildingSMART Data Dictionary

Link to PSD-XML PSD-XML

Name

Type

Description

SoundScale

P_ENUMERATEDVALUE / IfcLabel / PEnum_SoundScale

	Sound Scale	The reference sound scale. DBA: Decibels in an A-weighted scale DBB: Decibels in an B-weighted scale DBC: Decibels in an C-weighted scale NC: Noise criteria NR: Noise rating
	騒音の単位	騒音の単位： - DBA: dB(A) - DBB: dB(B) - DBC:dB(C) - NC:騒音基準 - NR:騒音評価
	소음단위	소음 단위. DBA : dB (A) DBB : dB (B) DBC : dB (C) NC : 소음 기준 NR : 소음 평가

SoundFrequency

P_LISTVALUE / IfcFrequencyMeasure

	Sound Frequency	List of nominal sound frequencies, correlated to the SoundPressure time series values (IfcTimeSeries.ListValues)
	音の周波数	代表的な周波数リスト、時系列音圧値と関連する。（IfcTimeSeriesにリストされた値）
	소리의 주파수	대표적인 주파수 목록 시계열 소리 圧値과 관련된다. (IfcTimeSeries에 나열된 값)

SoundPressure

P_REFERENCEVALUE / IfcTimeSeries / IfcSoundPressureMeasure

	Sound Pressure	A time series of sound pressure values measured in decibels at a reference pressure of 20 microPascals for the referenced octave band frequency. Each value in IfcTimeSeries.ListValues is correlated to the sound frequency at the same position within SoundFrequencies.
	音圧	時系列の音圧、単位はデシベル。オクターブバンドの音の強さ20mPaを基準する。IfcTimeSeriesにリストされた各値は同じ場所で、同じ周波数バントでの温の周波数と関連する。
	음압	시계열의 음압 단위는 dB. 옥타브 밴드 소리의 강도 20mPa을 기준한다. IfcTimeSeries에 나열된 각 값은 같은 장소에서 같은 주파수 번트에서 온도의 주파수와 관련.

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